Annual report pursuant to Section 13 and 15(d)

Long-Term Debt - Long-Term Debt (Detail)

v3.8.0.1
Long-Term Debt - Long-Term Debt (Detail) - USD ($)
Dec. 31, 2017
Dec. 31, 2016
Debt Instrument [Line Items]    
Net debt discount and premium $ 0 $ (1,258,000)
Debt issuance costs (13,208,000) (13,328,000)
Other 3,947,000 4,280,000
Total debt 1,024,703,000 882,678,000
Less current maturities (61,314,000) (43,003,000)
Long-Term Debt 963,389,000 839,675,000
2016 Revolving Credit Facility [Member]    
Debt Instrument [Line Items]    
2016 Revolving Credit Facility 75,000,000  
7.0% Senior Subordinated Notes due 2022 [Member]    
Debt Instrument [Line Items]    
Senior Subordinated Notes   200,000,000
5.0% Senior Subordinated Notes due 2023 [Member]    
Debt Instrument [Line Items]    
Senior Subordinated Notes 289,273,000 289,273,000
Total debt 289,273,000 289,273,000
6.125% Senior Subordinated Notes due 2027 [Member]    
Debt Instrument [Line Items]    
Senior Subordinated Notes 250,000,000  
Total debt 250,000,000  
Mortgage Notes [Member]    
Debt Instrument [Line Items]    
Mortgage notes to finance companies - fixed rate, bearing interest from 3.51% to 7.03% 199,972,000 176,369,000
Mortgage notes to finance companies - variable rate, bearing interest at 1.50 to 2.90 percentage points above one-month or three-month LIBOR $ 219,719,000 $ 227,342,000